added new blend modes include multiply, add, subtract, dissolve, etc.…#45

Merged

lowfatcode merged 3 commits intomainfrom blend_modes

Oct 24, 2021

+2,092-21

Commits on Oct 24, 2021

added new blend modes include multiply, add, subtract, dissolve, etc. fixed a couple of bugs
Jonathan Williamson
committed
add missing demo directory
Jonathan Williamson
committed
fix signed/unsigned compare
Jonathan Williamson
committed